The club is still thriving, and in the case of the fanclub releases it's about the only way to get a hold of this sorta stuff. Without paying a fortune to probably get ripped off on eBay, that is (and NONE of us here would advise that!)
It's still very reasonable cost-wise to join, you get your four newsletters a year and often Christmas cards and such-like. I found the value of my "joining pack" (which contains various bits and pieces of promo stuff Peter has on hand at that moment), to be worth the cost of membership on its own.
(This all said, I'm not currently a member - shame on me!! - as I'm living a somewhat peripatetic existence right now...)